织物组织结构对织物热湿舒适性能的影响

以148 dtex纯Coolmax为经纱,146 dtex麻赛尔/棉混纺纱为纬纱,设计开发了花型、3/1斜纹、五枚经面缎纹和八枚加强缎纹4种不同织物组织结构的吸湿导湿织物,并对不同织物的厚度、面密度、保暖性、热阻、湿阻、水分蒸发率、芯吸高度、吸水性进行测试,分析织物组织结构对织物热湿舒适性的影响,得出3/1斜纹和五枚缎纹织物的热湿舒适性能较优。     

热湿舒适性羊毛复合针织内衣的开发

热湿舒适性羊毛复合针织服装穿着无刺痒感,导汗排湿,是一种新型的羊毛针织内衣。论述了它的原料选用、编织方法及导汗排湿机理。     

基于热膜接触的针织物动态热湿传递测试技术

采用TPU薄膜来模拟人体皮肤,通过自主搭建的水槽、传感器等装置,研究了针织物的动态热湿传递性能差异。试验得出:织物与模拟皮肤接触时,不同纤维种类的织物热湿传递结果不同,显示出的热湿传递曲线有区别,从曲线中可以看出不同纤维针织物的瞬间导热和导湿情况以及最终的稳定情况。验证了基于热膜接触的织物动态热湿传递测试技术的可行性,认为经过一定的技术改进,该技术可以在一定程度上反映针织物不同的舒适性和接触冷暖感。     

细特丙纶针织物服用舒适性的研究

研究了细特丙纶变形丝和棉等三类针织物(起绒、毛■、纬平)的服用舒适性能,即透湿性、导湿性和保暖性,讨论了织物组织结构对服用舒适性的影响,并对细特丙纶针织物的毛细升高现象进行了分析.研究表明,细特丙纶各类针织物的透湿性、导湿性和保暖性均优于棉针织物,而棉盖丙针织物的导湿性优于丙纶和纯棉织物.     

聚酯基椰炭纤维混纺针织物的服用性能

为更好了解聚酯基椰炭纤维混纺针织物的服用性能,以聚酯基椰炭纤维混纺纱为原料,设计了7种不同组织结构的椰炭混纺针织面料,并对其坚牢度、热湿舒适性、保形性,以及除臭、释放负离子等功能进行测试。测试结果显示:聚酯基椰炭纤维具有良好的吸湿透气、舒适性等服用性能,而且还具有除臭、释放负离子等功能,市场应用前景广阔。     

Outlast空调纤维机织面料的开发与性能研究

以Outlast空调纤维混纺纱为原料,开发了2/2↗加强斜纹机织面料。对Outlast空调纤维纱的力学性能和耐热性进行了测试与表征,对织物的基本结构以及热湿舒适性、外观保持性和调温性能进行了测试,结果表明:该Outlast空调纤维机织面料调温效果明显,具有广阔的市场前景。     

纯毛织物静态热舒适性与厚度相关程度的探究

对纯毛织物的静态热舒适性和厚度进行了测定,并通过SPSS统计分析软件研究了纯毛织物的热舒适性与厚度的关系,结果表明：该织物的热舒适性与厚度相关程度较大,并且从理论上建立了克罗值与厚度间的函数关系式,为纺织技术人员提供了有参考价值的理论指导。     

轻质陶瓷“晶立方砂岩”的热舒适性研究

通过对物体的传热及热性能分析,并通过GEM、热模拟等方法进行分析,对比了轻质陶瓷晶立方砂岩产品及天然砂岩、瓷砖等几种不同材料的热性能,指出其不同的热性能导热系数、材料密度及比热是影响几种材料舒适性的主要原因。本文从理论上分析了晶立方砂岩产品的低导热系数及低密度是其舒适性良好的主要原因,同时也为建筑用陶瓷的舒适性研究提供了一种参考方法。     

Coolplus纤维性能及其功能性针织产品的开发

对Coolplus纤维的主要物理机械性能、溶解性能进行测试分析,同时开发了纯Coolplus针织物,与纯棉织物相比,具有良好的抗起毛起球性、抗勾丝性和湿舒适性,非常适合开发运动休闲服装。     

硅烷偶联剂对光伏密封胶耐候粘接性的影响

通过在光伏密封胶中加入适量的硅烷偶联剂,研究了不同类型的偶联剂的加入对多种基材在常温、紫外辐照、高温高湿、湿-热环境下的粘接性的影响,同时考查了其对光伏密封胶性能的影响。结果表明,偶联剂加入表干时间增长、拉伸强度增大,伸长率降低并改善常温粘接性。偶联剂聚合物能显著的改善脱醇型光伏硅酮密封剂的耐紫外辐射、高温高湿、湿-热环境下的粘接。     

油气储运技术的创新研究

石油和天然气的储存和运输,即石油和天然气资源的储存和运输,是有效利用石油和天然气资源的重要先决条件。随着中国经济社会的快速发展和油气储运技术的更新和发展,油气储运业面临着重大机遇和挑战。针对油气储运技术发展现状,确定基于安全,环保,节能的油气储运技术要不断的创新,才能促进油气进一步发展。     

油气储运存在问题及安全技术探讨

对目前油气储运技术中存在的安全问题进行深层次的探讨,根据引起这些问题的原因,提出相应的解决措施,为保障油气储运过程中的安全奠定基础。     

Physicochemical Nature and Structural Dependence of the Unique Properties of Polyester Fibres

The structure and properties of PET and PET fibres are examined on three structural levels — molecular, supermolecular, and micromolecular. It was shown that the unique properties of the fibres are determined by the aliphatic-aromatic structure of PET and the chemically regular molecular structure. The structural dependence of the fundamental physicomechanical and physicochemical properties of PET and PET fibres was analyzed. It was shown that the high glass transition temperature of PET and PET fibres is determined more by molecular rigidity than by intermolecular interactions and varies little under the effect of moisture. This causes high stability of the structure in mechanical effects and exposure to heat and moisture, high reversibility of deformation, and insignificant creep under mechanical stresses. The structure and fundamental properties of PET and PET fibres are compared with the characteristics of other kinds of large-tonnage fibre-forming polymers and fibres and other aliphatic-aromatic polyesters and fibres. The advantages of using polyester fibres for fabrication of household and industrial articles are substantiated and summarized based on an examination of the properties of these fibres.     

海水海砂混凝土力学性能与耐久性研究综述

远海工程建设面临钢筋混凝土易腐蚀、河砂和淡水匮乏等难题。国内外学者选择资源丰富的海水海砂代替淡水河砂制备混凝土,并研究其工作性能、力学性能及耐久性能。海水海砂中高含量的氯盐会加快水泥水化和凝结,导致早凝和早期强度提高,但后期增长变缓,最终强度与淡水河砂混凝土相近。海砂中少量的贝壳对混凝土工作性能和力学性能影响不大。海水海砂混凝土中的氯离子传输及结合方式更为复杂,其不同于内掺型氯离子,由此导致海水海砂混凝土中的钢筋锈蚀机理改变。辅助胶凝材料、复合型阻锈剂及纤维增强复合筋等为海水海砂混凝土结构应用提供了保障。     

多杀菌素类杀虫剂的应用及其抗性研究进展

多杀菌素类杀虫剂兼具生物农药的安全性和化学农药的速效性,且具广谱高效、环境相容性好的特点,在害虫防治中具有很好应用前景.但随着多杀菌素和乙基多杀菌素的广泛应用,多种害虫已对其产生了抗性.对比了不同生物农药作用机制和多杀菌素及其结构类似物的主要杀虫谱,总结近年多杀菌素和乙基多杀菌素对不同害虫防治的抗性发展状况、代谢及靶标...     

ESR and ENDOR Probes of Skeletal Conformations Implications for Conformations and Orientations of Chlorophylls In Vivo

ESR and ENDOR studies of sterically hindered porphyrins and chlorins provide clear evidence of the flexibility of the porphyrin skeleton, in agreement with crystallographic results. Examples considered are the cation radicals of zinc tetraphenyl-octaethylporphyrin and of the zinc and cobaltous nitrosyl complexes of octaethyl- and methyl octaethyl-chlorins. Extrapolation of the above results suggests that, in vivo, the protein pocket into which the chromophores fit and neighboring residues provide ready means of altering the conformations and properties of the pigments. These considerations can be applied to the primary acceptors of photosystems I and II: a combination of theoretical calculations, model studies and ENDOR results for the chlorophyll and pheophytin acceptors of photosystems I and II, respectively, suggests specific orientation of the 2-vinyl substituents of the chromophores and, in addition, supports the existence of hydrogen bonding at the 9-keto group. The implications of these results are that the protein environment helps control the orientations of the macrocycles and substituents, and thereby optimizes the relative orientations of donors and acceptors to facilitate electron transfer.     

Scrap of magnesia parts,the reasons for it,and means of reducing it

Conclusions The most common and characteristic forms of scrap of magnesia parts differing in form, dimensions, and composition are shown. These include deviations of the dimensions from the nominal, breaking off of the corners and edges, nonuniformity, welding together, spots, voids, fire cracks, spalls, and cracks of different origin.The reasons for formation of scrap were determined. The primary of them are the reduced quality of the raw material (chromite, magnesite) with a larger quantity of impurities containing limited silicon and calcium oxides, sometimes insufficient density, grain size, and completeness of hydration of the magnesite powders, nonconformity of the bunker, proportioning, mixing, and pressing equipment to the requirements of modern production of progressive high-quality refractories, the insufficiently high binding capacity of lignosulfonates, deviations in the quality of assembly and finishing of press equipment and automatic ejectors, of the car floor lining, and in firing conditions, a high variation in density of the green parts, and nonuniform heating and cooling in the volume of the parts and of the whole charge during firing. More than 50% of the total scrap of all forms is due to firing scrap of parts.The primary means of reducing or eliminating scrap of parts and simultaneously increasing their quality based on the reasons for formation of different forms of it were noted. These above all else, are increasing the volumes and improving and introduction of new methods of concentration of magnesite and chromite, a successive increase in the share of chrome concentrates, chromium-containing broken parts, and powders by firing of magnesite and caustic dust in the production of magnesia refractory parts as the result of a decrease in the share of commercial natural chromite and magnesite, the use in the production of parts of high-quality type PMSP-93 powder produced in shaft kilns and used as the charge for production of fused materials, the use of the prospect of processes for production of dense periclase powders uniform in chemical analysis from recovered caustic dust, replacement of obsolete mixing and press equipment by more modern, increasing the strength of green parts by above all else improving the binding properties of LST and increasing pressing pressure, forming of the taper of parts by the side plates of the die, improving the quality of assembly and increasing the reliability of functioning of press equipment and automatic ejectors, improving car floor linings, introduction of new methods and increasing the volumes of production of progressive unfired refractories in place of certain forms of fired parts, observation of all production parameters, and a relationship of the wages of labor to the quantity of scrap and the quality of refractories.Introduction of the new management system and the active work of the quality groups created will open up and lead to the action of unutilized reserves for reduction of scrap.Translated from Ogneupory, No. 2, pp. 31–38, February, 1989.     

地方高校化学专业创新创业型人才培养模式的构建

湖南文理学院化学化工学院在原有培养模式基础上,将创新创业理论融入到专业基础教育中,探索并构建了化学专业创新创业型人才培养模式,通过实施“理论＋实践＋辅助活动”的创新创业教育模式以及“四层递进式”（基础课程与实验→专业课程与实验→综合课程与实验→创新创业集中实践）人才培养模式,学生创新意识与创业能力得到了很好的锻炼,使就业率稳定在98％以上。     

新时代高职院校学生思想政治工作现状调查——以唐山工业职业技术学院为例

高职院校担当立德树人的根本任务,必须加强学生思想政治教育工作。通过问卷调查,从政治取向、培育践行社会主义核心价值观、心理健康、道德品质、法治观念等多各方面对高职院校学生思想政治状况进行了调查,发现高职学生思想政治状况良好,高职院校学生思政工作的问题主要集中在“思想政治项目”“课程思政改革”和“学生人生规划”等方面。针对问题,结合党的最新理论政策要求,从“加快构建高职院校思想政治工作体系”“加大高职院校思想政治教育项目供给侧结构性改革力度”“充分发挥学生主体作用”等方面提出对策和建议。     

磅秤防作弊单元及IC卡集成设计与应用

由于水泥企业销售与采购过程大物流运行的特殊性,磅秤计量节点成为企业物流过程控制的重要环节,也是现场管理的核心控制点。随着对信息化管理控制技术的适应和掌握,利用汽车衡作弊盗窃水泥的方式层出不穷,为杜绝水泥厂采购、销售计量过程中的各种作弊行为,保证进出厂物料的准确计量,减少公司产品及原燃材料流失等经济损失,提高进出厂物料计量和物流综合管理水平,在不断总结磅秤防作弊系统改造与ERP集成应用经验的同时,进行防作弊单元与IC卡技术集成与流程完善设计,实现了对流程性、作业型作弊的全面防范。